Constraints on the neutron drip-line with the newly observed 39Na

Abstract

The recently observed weakly-bound 39Na provides a stringent theoretical constraint on the neutron drip-line. We studied the properties of drip-line nuclei around 39Na with the Hartree-Fock-Bogoliubov method and various Skyrme interactions. We adopted the extended SkM*-ext1 parameterization which can properly describe two-neutron separation energies of oxygen and fluorine isotopes and deformations at the center of the "island of inversion". Systematic calculations of drip lines of O, F, Ne, Na, Mg, and Al isotopes have been performed. We infer that 42Mg is weakly bound and 45Al is less weakly bound. 44Mg and 47Al could be barely existed. We also demonstrated the deformed halo properties of 39Na. Our studies could be valuable for experimental explorations of drip-line nuclei in the forthcoming FRIB and other rare-isotope beam facilities .

arXiv comment6 pages, 4 figures, submitted

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Cited by in corpus (7)

• Rotating deformed halo nuclei and shape decoupling effects
• Collapse of the $N=28$ shell closure in the newly discovered ${}^{39}$Na and the development of deformed halos towards the neutron dripline
• Exploring the halo character and dipole response in the dripline nucleus ${}^{31}$F
• New quantification of symmetry energy from neutron skin thicknesses of ${}^{48}$Ca and ${}^{208}$Pb
• From finite nuclei to neutron stars : the essential role of high-order density dependence in effective forces
• Correlations between nuclear landscape boundaries and neutron-rich r-process abundances
• Correlation between the charge radii difference in mirror partner nuclei and the symmetry energy slope